摘要
天津站交通枢纽后广场基坑开挖面积大,水源补给充分,通过模拟计算和实测数据对比分析,总结出深基坑降水施工引起周围地表变形规律。研究结果表明:降水施工会对约45m范围内的土体均产生较大沉降影响;第三、四步降水主要引起地表沉降;降水施工引起墙后土体向基坑外侧位移,基坑开挖使墙后土体向基坑内侧位移。
The square foundation pit excavation area is large, the water supply is sufficient, through the simulation calculation and measured data analysis, summed up the law of the surrounding surface deformation caused by dewatering construction of deep foundation pit. The results show that ：dewatering construction will have a greater settlement influence on soil mass in the range of 45m;the third and fourth step precipitation is mainly caused of surface subsidence; dewatering construction is causing soil behind the wall to move to outside of foundation pit, excavation of foundation pit is causing the soil behind the wall to move to inner side of the foundation pit.
出处
《低温建筑技术》
2017年第2期99-102,共4页
Low Temperature Architecture Technology
关键词
深基坑
降水施工
地表沉降
数值模拟
deep foundation pit
dewatering
ground surface settlement
numerical simulation
